Matrices
DRAFT
8th - 10th grade
2910 times
Mathematics
75%
average accuracy
3 years ago
mkrein
6
Save
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Matrices
DRAFT
3 years ago
by
mkrein
Played 2910 times
6
8th - 10th grade
Mathematics
75% average accuracy
6
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14 Questions
Show answers
Question 1
SURVEY
300 seconds
Q. Add
answer choices
11 8
-4 2
3 2
-6 -6
-3 2
-4 -6
10 8
-6 2
Question 2
SURVEY
300 seconds
Q. Subtract
answer choices
3 -8
0 -1
3 -4
8 -13
-3 8
0 1
3 -8
-8 1
Question 3
SURVEY
300 seconds
Q. Find A+B
answer choices
8 10
8 1
12 25
7 1
10 30
0 1
can't add two together because the rows dont match columns
Question 4
SURVEY
300 seconds
Q. What do w, x, y and z equal in this matrix subtraction?
answer choices
w = 13, x = 4, y = 7, z = 23
w = 13, x = -4, y = 11, z = 23
w = 13, x = 4, y = 11, z = 23
w = 13, x = 4, y = 11, z = 17
Question 5
SURVEY
300 seconds
Q. What do m, n, p and q equal in this scalar matrix multiplication?
answer choices
m=8, n=9, p=-4, q=4
m=15, n = -45, p=20, q=-5
m=20, n=-5, p=15, q=-45
m=-5, n=20, p=-45, q=15
Question 6
SURVEY
60 seconds
Q. What are the dimensions of this matrix?
answer choices
2 x 3
3 x 2
6 x 1
1 x 6
Question 7
SURVEY
300 seconds
Q. Perform the indicated operation. If it’s not possible, select Not Possible.
answer choices
7
-7
-6
20
7
-9
-6
20
Not Possible
7
-9
2
20
Question 8
SURVEY
900 seconds
Q. find: B*A
answer choices
47 30
9 5
17 15
42 35
10 25
7 1
not possible because rows do not match columns
Question 9
SURVEY
900 seconds
Q. Multiply
answer choices
20 15 -10
30 -5 0
-20 15 -10
30 -5 0
1 8 3
11 4 5
20 -15 10
-30 5 0
Question 10
SURVEY
180 seconds
Q. Subtract
answer choices
-5
-8
3
10
-9
8
3
2
5
-8
3
10
-5
8
3
2
Question 11
SURVEY
60 seconds
Q. In Matrix R (pictured) what element is in the second row, third column?
answer choices
8
9.01
6
1
Question 12
SURVEY
30 seconds
Q. What comes first in the order?
answer choices
Row
Column
Question 13
SURVEY
30 seconds
Q. What must be true in order to ADD two matrices?
answer choices
They must be square.
The dimensions must be equal.
The determinant can't equal 0.
The column of the 1st must equal the row of the 2nd.
Question 14
SURVEY
30 seconds
Q. You can multiply a 2X3 matrix by which matrix?
answer choices
2X2
2X12
3X12
2X3
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